baber/WOPTO huggingface dataset:
Patent CA-2102589-A1 (CA)
Title: Method and apparatus for removing air locks within manually operated micro-filtration devices
Inventor: WEBB GARTH T
IPC: B01D19/00
Filed: 1993-11-05
Abstract: Currently microfiltration devices use hydrophilic membranes to sterilize liquids. Air locks may develop on the upstream side of the filter membrane within these apparatus.      The present invention provides a method and apparatus for removing an air lock from the upstream side of a microfilter in a device for dispensing a sterile liquid from a storage container by forcing the liquid through a microfilter. The device comprises a first inlet passsageway communicating between the storage container and a chamber on the upstream side of the filter closable by a first valve, a second outlet passageway communicating between the storage container and the chamber on the upstream side of the filter closable by a second valve, and the method comprises the steps of: a) creat-ing a partial vacuum in the chamber upstream of the microfilt-er to thereby open the first valve and draw the liquid from the storage container through the first passageway into the chamber and into contact with the upstream side of the filter; b) closing the first and second valves and increasing the air pressure in the upstream chamber; and c) opening the second valve thereby releasing air under pressure from the upstream chamber through the second passageway.
Patent CA-2104745-A1 (CA)
Title: Field effect transistor
Inventor: SHIGA NOBUO
IPC: H01L29/10
Filed: 1993-08-25
Abstract: ABSTRACT OF THE DISCLOSURE     It is an object of the present invention to provide a dual-gate type MESFET having a high drain breakdown voltage and excellent high-frequency characteristics. A semiconductor substrate used in the present invention is obtained by sequentially forming a non-doped buffer layer 2, a thin first pulse-doped layer 3 having a high impurity concentration, and a cap layer 7 on an underlying semiconductor substrate 1 by epitaxial growth.  The cap layer 7 has a thin second pulse-doped layer 5 having a high impurity concentration sandwiched between non-doped layers 4 and 6.  The thickness and impurity concentration of the second pulse-doped layer 5 are set such that the second pulse-doped layer 5 is depleted by a surface depletion layer caused by the interface state of the cap layer surface, and the surface depletion layer does not extend to the first pulse-doped layer 3. A source electrode 13, a drain electrode 16, and first and second gate electrodes 14 and 15 are formed on the semiconductor substrate surface.  High-impurity-concentration ion implantation regions 10, 11, and 12 are formed at a source electrode formation region, a drain electrode formation region, and a region between the first and second gate electrode formation regions to extend from the semiconductor substrate surface to the first pulse-doped layer 3.  The second electrode 15 formed on the drain electrode 16 side is sufficiently separated from the high-impurity-concentration ion implantation region 12 below the drain electrode 16.
Patent CA-2105978-A1 (CA)
Title: Measuring method and apparatus
Inventor: STRINGER BRADLEY J
IPC: G01B11/00
Filed: 1992-03-12
Abstract: The present invention relates to methods and apparatus for measuring the linear dimensions and determining the three-dimensional, spatial volume of objects (620). In the preferred embodiments, ultrasonic sensing is employed, alone or in combination with other measuring methods such as light curtains and the timing (622) of moving objects (620), to ascertain linear dimensions. The preferred embodiments are particularly adapted to the measurement of large and irregularly configured objects, such as palletized loads, and to the measurement of moving, rectangular objects (620) of random orientation with respect to the direction of travel.
Patent CA-2107779-A1 (CA)
Inventor: PAPAZIAN RICHARD
IPC: A44B1/28
Filed: 1992-04-06
Abstract: PCT No. PCT/FR92/00306 Sec. 371 Date Dec. 6, 1993 Sec. 102(e) Date Dec. 6, 1993 PCT Filed Apr. 6, 1992 PCT Pub. No. WO92/17082 PCT Pub. Date Oct. 15, 1992.A novel system of rapidly securing a button using stud or thread is described, with the possibility of recovering the button after fitting. Improved appearance is achieved by rendering the stud penetration hole invisible on its upper surface. The button comprises an upper part or cup which can be fitted if necessary with a decorative cover (4). It also comprises a support or base with a transverse through hole (6) used for recovering the button or securing it in a conventional manner, the stud penetration hole having two retaining lugs, and also a serrated (2) or coarse (8) stud for securing the button to the fabric (7). The aim of the invention is to improve the appearance of existing "quick fit" buttons, to enable said buttons to be recovered, and to allow them to be secured in a conventional manner.
Patent CA-2107933-A1 (CA)
Inventor: COTE DENIS
IPC: B01D61/10
Filed: 1993-10-07
Abstract: La pompe comporte trois séries distinctes de stages de pompage entraînées sur un seul arbre par un même moteur. Entre les première et deuxième séries de stages  de  pompage,   le  liquide  est  acheminé  en dérivation hors de  la pompe dans  la direction,  par exemple, d'un dispositif de filtrage visant à retirer du liquide le plus d'impuretés possible.  Ensuite,  le liquide filtré est retourné vers la deuxième série de stages de pompage de la pompe où le liquide est pompé à haute pression avant d'être acheminé en dérivation hors de la pompe en direction d'une enceinte de traitement, notamment  où  s'effectue  une  osmose  inverse,  une nanofiltration ou  autre.   Le perméat est retiré de l'installation  tandis  que  le  soluté  est,  en  grande partie, recirculé vers une troisième série de stages de traitement, à la sortie de laquelle il se mélange avec le liquide filtré en provenance de la deuxième série de stages et le tout est alors acheminé de nouveau vers l'enceinte  de  traitement.    Ce  système  à  très  bon rendement permet  l'économie  d'une deuxième  et d'une troisième  pompes.    La  pompe  peut  également  être utilisée pour pomper de façon indépendante, i.e. sans mélanges, plus d'un liquide.   Dans ce cas, les stages de pompage sont encore une fois séparés les uns des autres et chaque stage pompe son liquide respectif. Les  stages peuvent pomper des  liquides  à différents débits et à différentes pressions.
Patent CA-2109895-A1 (CA)
Title: Nicotine containing oral preparation
Inventor: IRWIN RICHARD N
IPC: B01J2/00
Filed: 1993-11-24
Abstract: A method of making a lozenge for use as a oral smoking substitute comprising the steps of:   (i)  forming granules by wet massing a strong base with granulating ingredients, and (ii) cold compressing the granules with a composition comprising an alkaloid selected from the group consisting   of   nicotine   and   pharmaceutically acceptable salts of nicotine to form a lozenge.
Patent CA-2110175-A1 (CA)
Title: Aminoalkylthiazole derivative
Inventor: NAKAZATO ATSURO
IPC: C07D277/40
Filed: 1992-05-29
Abstract: Abstract Object: To provide an antipsychotic drug being different in functional mechanism from dopamine autoreceptor agonists, namely, to provide an antipsychotic drug having a specific affinity for a sigma receptor and causing no extrapyramidal disorder.       Constitution:  An aminoalkylthiazole derivative represented by formula:                      (wherein R1 represents a phenyl group substituted with a halogen atom; R2 and R3 are either the same or different and each represents an alkyl group having 4 to 10 carbon atoms; and n is 2 or 3;) and a salt thereof.
Patent CA-2115110-A1 (CA)
Inventor: BAERTS CHRISTIAAN
IPC: G01N1/12
Filed: 1994-02-07
Abstract: A sampler for molten metal has a carrier body, in which a sample chamber and a prechamber, connected to the latter in a sealed manner via an inflow opening, are arranged one behind the other along the axis of the carrier body, the prechamber having an inlet duct passing through the carrier body. In order to provide a sampler that can be assembled easily and reliably, even with larger manufacturing tolerances, and that allows easy removal of the sample after sampling, the sample chamber is held axially against the prechamber by means of a spring element.
Patent CA-2115385-A1 (CA)
Title: High rise recycling system
Inventor: ROSS JAMES A
IPC: B65F1/00
Filed: 1994-02-10
Abstract: A high rise recycling system for a multi-story building comprises  a vertical chute extending from the bottom to top floor,  discharge  openings on each floor, a rotatable chute at  the  lower end to discharge garbage into a compactor and to  discharge  recyclable glass, paper, aluminum and plastic into  a  selective  discharge  assembly  which  selectively discharges  each  of  the  separate  items  into  respective containers for such separate items. A control circuit having control  switches  on  each  floor controls operation of the selective  discharge  assembly.  A  power  circuit  drives a conveyor belt which carries the recyclable items through the selective  discharge  assembly to their respective discharge outlets for deposit into their respective containers.
Patent CA-2116918-A1 (CA)
Title: Headed screw construction for use in fixing the position of an intramedullary nail
Inventor: PENNIG DIETMAR
IPC: F16B23/00
Filed: 1994-03-03
Abstract: The invention relates to a screw for fixing an intramedullary nail in position. An external thread on the screw shank is provided over only a part of the length of the shank. The screw head is provided with an external thread having a direction of helical advance which is opposite the direction of helical advance of the screw-shank thread.
Patent CA-2117845-A1 (CA)
Inventor: SLIVKA BENJAMIN W
IPC: G06F3/06
Filed: 1994-10-11
Abstract: The present invention provides a method in a computer system of integrating a compression system with an operating system. The computer system preferably comprises at least a memory device and one storage device. A user-supplied device driver is provided for storage devices that are not supported by the computer system to enable the computer system to communicate with the storage devices. In response to initialization of the computer system, the operating/compression system is loaded into the memory device and begins executing before any user-supplied device drivers are loaded into the memory device. Any compressed volume files located on the computer system are assigned drive letters at this time. When the user-supplied device drivers are loaded into the memory device, drive letters are assigned to the various storage devices. A drive letter conflict resolution scheme is provided to resolve conflicts that occur when the operating system attempts to assign a drive letter. The compression system assigns drive letters to compressed volume files (in the case where a compressed drive is created from free space on an existing drive) or to host drives (in the case where the contents of an existing drive are compressed).
Patent CA-2118374-A1 (CA)
Title: Use of saccharomyces yeasts for the manufacture of a medicine against cryptosporidiosis
Inventor: BLEHAUT HENRI
IPC: A01N63/00
Filed: 1994-10-18
Abstract: Use of Saccharomyces yeasts for the manufacture of a medicine against cryptosporidiosis ABSTRACT OF THE TECHNICAL CONTENT OF THE INVENTION         The present invention relates  to the use of yeasts of the genus Saccharomyces for the manufacture of a medicine for the treatment of cryptosporidiosis.            Figure none.
Patent CA-2119625-A1 (CA)
Inventor: KOSTIC ZORAN
IPC: H04L25/03
Filed: 1994-03-22
Abstract: An equalization technique for the compensation of degradation caused by multipath Rayleigh fading channels to the transmission of digitally modulatedsignals such as   (see fig. I)   Differential Quadrature Phase Shift Keying (DQPSK) modulated signals. The technique is applicable to both linear and nonlinear transversal equalizers. Based on the Method of Projection onto Convex Sets (POCS), the technique is realized in an iterative form. The convergence speed of equalization depends on the magnitude of a look-back parameter, and is comparable to the speed of recursive least square based equalizers. The computational complexity of the technique also is variable and is adaptable to the convergence speed requirements. For achieving convergence speeds as recursive least square techniques, the computational load required of the presented equalization is of the order of the load required of the recursive least square techniques, but its program implementation is exceedingly simpler. At the same time the code size, memory and power consumption requirements are lower.
Patent CA-2120347-A1 (CA)
Title: Failsafe digital bus to analog protocol converter system
Inventor: BAKER JOHN A
IPC: G06F11/00
Filed: 1993-07-29
Abstract: A failsafe avionics interface unit (10) serves as a protocol converter system for translating data for control purposes from a digital communication bus (65) to an analog control channel as an upgrade or interface to an existing analog control system. The avionics interface unit (10) includes digital interface bus logic (101), a digital data processor module (102), an analog interface, and a mode selection circuit (104). Data communicated over the digital interface bus (65) is periodically translated into equivalent analog control signals. For safety purposes, the avionics interface unit (10) ensures the integrity of the system by repetitively looping back or wrapping the digital equivalents of the analog output signals and comparing them to commanded digital control values. The protocol converter system additionally monitors communications over the digital data bus for data continuity. If the difference between a wrapped digital equivalent of an analog output signal and an expected value exceeds tolerable limits or if communication fails, the system disconnects its interface from control using redundant software and hardware and returns control to the analog control system (51).
Patent CA-2128314-A1 (CA)
Inventor: REBHAN DAVID M
IPC: C08F2/34
Filed: 1994-07-18
Abstract: A process for the production of polypropylene comprising continuously contacting liquid propylene or a mixture comprising liquid propylene and one or more other alpha-olefins in one or more reaction zones, under gas phase polymerization conditions, with a catalyst system comprising (i) a solid particulate catalyst precursor, which includes magnesium; titanium; a halogen which is chlorine, bromine, or iodine, or mixtures thereof; and, as an inside electron donor, a carboxylic acid ester; (ii) a hydrocarbylaluminum cocatalyst; and (iii) as an outside electron donor, a silicon compound containing at least one silicon-oxygen-carbon linkage, the particles of precursor being carried into the reaction zone(s) via a portion of the liquid propylene, the flow rate of said portion having a Reynolds number greater than about 15,000.
Patent CA-2128368-A1 (CA)
Inventor: KAWAGUCHI MASAHIRO
IPC: F04B27/08
Filed: 1994-07-19
Abstract: A compressor includes a rotary drive shaft having a first end and a second end, both the ends being rotatably supported by opposing walls of a crank chamber defined in a casing and a swash plate tiltably mounted on the drive shaft and operably coupled with a piston in a cylinder bore.  A rotation of the drive shaft results in a reciprocating movement of the piston for compressing refrigerant gas in a cylinder bore.  A rotary member is secured to the first end which extends outside the casing.  The rotary member supplies a power to the drive shaft from a power supply.  A support member, disposed between the rotary member and the first end, protrudes outward from the casing.  A first bearing, disposed between the support member and the rotary member, receives a thrust load and a radial load acting on the rotary member when the rotary member rotates.  A second bearing, disposed between the casing and the second end, receives the radial load acting on the rotary member when the rotary member rotates.
Patent CA-2132247-A1 (CA)
Title: Electrical Angle Connector of a Printed Circuit Board Type Having a Plurality of Connecting Conductive Strips of a Common Length
Inventor: SAITO KAZUKI
IPC: H01R12/72
Filed: 1994-09-16
Abstract: A right-angle electrical connector comprising a plurality of contacts supported on an insulator body, the contacts having a length equal to one another and having opposite ends projecting in different directions normal to each other and coming into contact with first and second connection objects, respectively, to be electrically connected by the connector. Each of the contacts comprises two portions extending in the different directions. The ratio of two portions of each one of contacts is different from that of the different one of contacts. In order to avoid production of various contacts which are different from one another in shape and dimension, the connector comprises a main element of an insulator substrate and conductive strip lines formed thereon, and contact elements like one another fixed to the insulator substrate to project from, and in directions normal to, adjacent side edges of the insulator substrates respectively. The conductive strip lines have a length equal to each other and first and second ends near the adjacent side edges and are electrically connected to the contact elements. The contact elements are used for making connection with the first and the second connection objects.
Patent CA-2133471-A1 (CA)
Title: Optimal DC Motor/Controller Configuration
Inventor: LANKIN ROBERT
IPC: B60L11/18
Filed: 1993-03-30
Abstract: Optimal constructions for two motor/controller configurations (20) are disclosed. The controller structure includes an H-bridge (48) for controlling field current using synchronous-rectification of MOSFET (58, 60, 62, 64) devices and a circuit for chopping the armature (36) current using synchronous-rectification of MOSFET (44, 46) devices arranged in a half bridge. The controller (20) may be configured with a series-wound or a separately excited DC traction motor. In the series-wound motor/ controller configuration, the field (38) and the armature (36) current are separately controlled. In the separately excited motor/ controller configuration, the field (38) of the motor is preferably wound so that the rated field current is achieved at about 20 % of the rated battery voltage. This provides a separately excited motor in which the field current can be boosted by a factor of S to achieve high start-up and low speed torques which match the torque outputs of a series-wound motor under similar operating conditions.
Patent CA-2133588-A1 (CA)
Title: Painless needle and sheath assembly (new and improved)
Inventor: MORRIS CHRIS
IPC: A61M5/42
Filed: 1994-10-04
Abstract: This invention is a fine needle sealed to the end of a sheath, said sheath slips over to seal and grip the shaft of any hypodermic needle.  The use applies especially to the injection of anaesthetic; where an injection into skin can be made almost painlessly by slipping the sheath over the hypodermic needle, the syringe of which is loaded with anaesthetic.  The fine needle then penetrates the skin almost painlessly and a drop or two of anaesthetic is injected slowly under the skin. The fine needle is then withdrawn from the skin and the sheath and fine needle removed from the thicker hypodermic needle.  The hypodermic needle can then penetrate the skin painlessly at the anaesthetised location.
Patent CA-2135006-A1 (CA)
Title: Aromatic polyethersulfone gas separation membranes
Inventor: SIMMONS JOHN W
IPC: B01D71/68
Filed: 1994-11-03
Abstract: TITLE AROMATIC POLYETHERSULFONE  GAS SEPARATION MEMBRANES ABSTRACT OF THE DISCLOSURE       Novel alkyl-substituted aromatic polyethersulfone gas separation membranes and the process of using such membranes to separate one or more gases from a gaseous mixture is disclosed. The polyethersulfones are formed from aromatic alcohols of the formula   where Z is independently alkyl groups having 1 to 10 carbon atoms, most preferably a tertiary butyl group, and n is an integer from 1 to 4, preferably 1.
Patent CA-2137467-A1 (CA)
Title: Security enabling and switching devices
Inventor: SANSOME ANDREW J T
IPC: B60R25/04
Filed: 1993-06-17
Abstract: The invention provides a removable security device (100) which in a preferred embodiment is inserted into an existing ci-gar/cigarette lighter socket of a vehicle and acts as an anti-theft system. The security device (100) transmits an authorisation code through the electrical network of the vehicle. The code is detected by enabling devices (200) which are connected in series with components (300) of the vehicle, e.g. the starter motor and/or fuel pump. When the or each enabling device (200) receives a bona fide authorisation code it switches on thereby allowing the component to be operated. As the enabling devices (200) are small they can be fitted into components at manufacture or fitted to existing components. The system has a very low power requirement and therefore does not need cooling. It has safety features which ensure that if the vehicle stalls the components are not disabled. An advantage of the invention is that no major modifications need to be made to a vehicle.
Patent CA-2140835-A1 (CA)
Title: Adhesive composition for surgical use based on non-cross-linked collagen modified by oxidative cleavage
Inventor: TARDY MICHEL
IPC: A61L24/00
Filed: 1995-01-23
Abstract: The invention relates to a biocompatible, bio-resorbable and non-toxic adhesive composition for surgical use, for the bonding, in particular, of biological tissues to one another or to an implanted biomaterial, characterized in that it comprises a reactive acidic solution of non-crosslinked and potentially crosslinkable collagen or gelatin modified by oxidative cleavage, at a concentration which is prefer-ably between approximately 5 and 30% by weight.      It also relates to reactive acidic solutions and powders based on non-crosslinked collagen or gelatin modified by oxidative cleavage which are used as inter-mediate products in the preparation of the abovementioned composition, and to the process for their preparation.      It also relates to adhesive kits which comprise, on the one hand, the abovementioned reactive acidic solution and, on the other hand, a neutralizing solution and which are intended for extemporaneous mixing.      Finally it relates to a method of application of the adhesive composition according to the invention.      The invention is particularly useful in the areas of adhesion, haemostasis, leaktightness with respect to liquids or gases, cicatrization, filling, avoiding adhesion in surgery, embolization, as a local system for release of medicamentary active principles, etc.
Patent CA-2140940-A1 (CA)
Title: Adjustable level play desk for a child
Inventor: BERTRAND VICTOR J
IPC: A47B77/10
Filed: 1995-01-24
Abstract: The adjustable level play desk is for a child. It comprises at least three elongated legs of substantially circular cross section, each of the legs having a lower end for resting on the ground and an outer cylindrical surface provided with a first locking device; and a top body having an upper play surface, and at least three sleeves oriented downwardly when in use, the sleeves being for slidably receiving respectively the legs, the sleeves being solid with the top body at positions providing steadiness thereof.      Each of the sleeves has a lower opening for receiving the corresponding leg, and an inner cylindrical surface provided with a second locking device for removably engaging with the first locking device of the corresponding leg upon a predetermined rotation thereof to lock the corresponding leg with respect to the sleeve, and a guiding device for guiding the corresponding leg along a longitudinal direction of the sleeve, whereby, in operation, the play surface is adjusted with respect to the child according to a given level by sliding and locking the legs with respect to the sleeves.